Power Saving (hands stop to save power when the watch is left in the dark)

Full auto-calendar

Date and day of the week display

Accuracy: ±15 seconds per month (with no signal calibration)

Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)